Jasper Threshold Days by Year (USC00014226)

16 fixed thresholds counted per year at Jasper (USC00014226): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jasper Thresholds

Jasper: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 2009 with 68.
Jasper: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 2009 with 36.
Jasper: days with a maximum temperature at or above 30 C (86 F) in 42 years, most in 2007 with 133.
Jasper: days with a maximum temperature at or above 90 F (32.2 C) in 42 years, most in 1962 with 98.
16 fixed thresholds have at least one qualifying day at Jasper.

Days at or above 30 C (86 F)

42 years with a qualifying day

Days per year at Jasper with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 133 in 2007.

Days at or above 30 C (86 F) per year at Jasper
Year	Days	Decade average
1961	94	104.1
1962	129	104.1
1963	116	104.1
1964	114	104.1
1965	119	104.1
1966	90	104.1
1967	76	104.1
1968	102	104.1
1969	97	104.1
1970	95	83.2
1971	90	83.2
1972	81	83.2
1973	76	83.2
1974	53	83.2
1975	76	83.2
1976	62	83.2
1977	105	83.2
1978	113	83.2
1979	81	83.2
1980	116	102.2
1981	110	102.2
1982	103	102.2
1983	92	102.2
1984	108	102.2
1985	84	102.2
1991	96	85
1992	59	85
1993	98	85
1994	70	85
1995	102	85
1996	87	85
1997	83	85
2000	87	100.2
2001	88	100.2
2002	120	100.2
2003	80	100.2
2004	89	100.2
2005	90	100.2
2006	122	100.2
2007	133	100.2
2008	101	100.2
2009	92	100.2

For each year, a bar from the first to the last day at Jasper meeting 30 C (86 F).

First to last qualifying date each year at Jasper
Year	First date	Last date
1961	1961-05-05	1961-10-30
1962	1962-04-27	1962-10-15
1963	1963-03-30	1963-10-26
1964	1964-04-07	1964-09-27
1965	1965-04-09	1965-09-22
1966	1966-03-21	1966-09-26
1967	1967-03-12	1967-10-08
1968	1968-04-18	1968-10-02
1969	1969-04-02	1969-09-18
1970	1970-04-01	1970-09-26
1971	1971-04-12	1971-10-05
1972	1972-04-15	1972-09-20
1973	1973-05-11	1973-09-26
1974	1974-03-10	1974-09-13
1975	1975-05-23	1975-10-15
1976	1976-06-10	1976-09-26
1977	1977-05-08	1977-09-26
1978	1978-04-01	1978-09-21
1979	1979-05-11	1979-09-08
1980	1980-04-22	1980-09-25
1981	1981-04-01	1981-10-07
1982	1982-03-18	1982-10-09
1983	1983-05-10	1983-10-03
1984	1984-04-25	1984-10-13
1985	1985-04-20	1985-09-22
1991	1991-05-16	1991-09-24
1992	1992-05-16	1992-09-21
1993	1993-05-07	1993-09-26
1994	1994-04-21	1994-09-29
1995	1995-03-24	1995-09-20
1996	1996-05-09	1996-09-17
1997	1997-05-19	1997-10-12
2000	2000-05-06	2000-10-31
2001	2001-04-10	2001-09-24
2002	2002-04-18	2002-10-07
2003	2003-04-15	2003-09-27
2004	2004-04-25	2004-09-25
2005	2005-05-12	2005-10-16
2006	2006-04-15	2006-10-06
2007	2007-03-26	2007-10-19
2008	2008-05-09	2008-10-02
2009	2009-04-24	2009-10-10

Every Fixed Threshold

Fixed thresholds at Jasper
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	42	133	2007	92
35 C (95 F): Days	34	55	1980	4
40 C (104 F): Days	4	6	1980	1
90 F (32.2 C): Days	42	98	1962	50
100 F (37.8 C): Days	15	20	1980	1
0 C (32 F): Ice days (max	30	10	1978	3
0 C (32 F): Frost days (min	35	106	1976	67
-10 C (14 F): Days with min	31	14	1981	6
-20 C (-4 F): Days with min	1	1	1966	1
20 C (68 F): Tropical nights (min	35	84	2002	58
10 mm (0.39 in): Days with 10 mm or more rain	43	68	2009	41
25 mm (0.98 in): Days with 25 mm or more rain	43	36	2009	17
50 mm (1.97 in): Days with 50 mm or more rain	40	9	1991	9
100 mm (3.94 in): Days with 100 mm or more rain	15	2	1979	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1973	1
10 cm (3.9 in): Days with 10 cm or more snowfall	3	1	1963	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Jasper threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Jasper Threshold Days by Year (USC00014226)

Key Facts for Jasper Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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